Results 11 to 20 of about 1,740 (184)

Cross Spectral Analysis of CODAR-SeaSonde Echoes from Sea Surface and Ionosphere at Taiwan [PDF]

open access: yesInternational Journal of Antennas and Propagation, 2017
It is well known that the primary targets responsible for first-order sea echoes observed by a High-Frequency (HF) radar are the advancing and receding ocean waves with the wavelengths at Bragg scales.
Chien-Ya Wang   +3 more
doaj   +3 more sources

Impact of assimilating wind retrievals from high‐frequency radar on COAMPS forecasts in the Chesapeake Bay

open access: yesAtmospheric Science Letters, 2023
Wind retrievals from high‐frequency radars (HFRs) provide high‐density, hourly wind estimates over the ocean near the coast. These wind retrievals are a promising new source of near‐surface wind estimates in coastal regions where it is difficult to ...
Brian K. Blaylock   +3 more
doaj   +2 more sources

Space‐time adaptive processing algorithm based on hyper beamforming for ionospheric clutter suppression in small‐array high‐frequency surface wave radar

open access: yesIET Radar, Sonar &Navigation, Volume 17, Issue 4, Page 545-555, April 2023., 2023
This study proposes a hyper beamforming‐joint domain localised algorithm that can effectively remove the effect of ionospheric clutter for small‐array and low degree of freedom, which is applicable at low signal‐to‐clutter ratio. The algorithm can assist target detection and tracking under ionospheric clutter background.
Jiaming Li, Qiang Yang, Xin Zhang
wiley   +1 more source

Subinertial Sea Surface Heights Anomalies Estimated Using High Frequency Radar Surface Current Data in the Mississippi Bight

open access: yesJournal of Geophysical Research: Oceans, Volume 128, Issue 3, March 2023., 2023
Abstract Sea level studies in the Mississippi Bight (MSB) are less abundant than in other coastal waters of USA. This study investigates the subinertial (time scales >2 days) sea level anomalies in the MSB shelf. The diagnostics of the terms in the invariant form of the momentum equation were computed to determine which terms have the most influence on
Uchenna Nwankwo   +3 more
wiley   +1 more source

Ocean Circulation Near Cape Hatteras: Observations of Mean and Variability

open access: yesJournal of Geophysical Research: Oceans, Volume 127, Issue 12, December 2022., 2022
Abstract The convergence of different water masses on the shelf and along the shelfbreak, and cross‐isobath shelf‐open ocean exchanges contribute to the complex circulation near Cape Hatteras. We examine the mean and variability of these circulations using data from nine bottom‐mounted acoustic Doppler current profilers, deployed over the mid‐ to outer‐
Lu Han   +6 more
wiley   +1 more source

Mapping Surface Currents in Monterey Bay With CODAR-Type HF Radar [PDF]

open access: yesOceanography, 1997
HIGH-FREQUENCY (HF) radar measurements have been employed around Monterey Bay, CA, to measure ocean surface currents since February 1992. The first array consisted of two older-generation CODAR instruments located at sites near Monterey in the south and Moss Landing, halfway around the bay to the north (Front Cover: Fig. 1).
Paduan, Jeffrey D., Cook, Michael S.
openaire   +3 more sources

PACKER: a switchbox router based on conflict elimination by local transformations [PDF]

open access: yes, 1989
PACKER is an algorithm for switchbox routing, based on a novel approach. In an initial phase, the connectivity of each net is established without taking the other nets into account. In general, this gives rise to conflicts (short circuits). In the second
Gerez, Sabih H., Herrmann, Otto E.
core   +3 more sources

A Quality Control Method for Broad-Beam HF Radar Current Velocity Measurements

open access: yesJournal of Marine Science and Engineering, 2019
This paper describes a method to provide quality control for radial velocity maps derived from radar echo voltage cross spectra measured by broad-beam high frequency radars.
Belinda Lipa   +2 more
doaj   +1 more source

Annual and Seasonal Surface Circulation Over the Mid‐Atlantic Bight Continental Shelf Derived From a Decade of High Frequency Radar Observations

open access: yesJournal of Geophysical Research: Oceans, Volume 125, Issue 11, November 2020., 2020
Abstract A decade (2007–2016) of hourly 6‐km‐resolution maps of the surface currents across the Mid‐Atlantic Bight (MAB) generated by a regional‐scale High Frequency Radar network are used to reveal new insights into the spatial patterns of the annual and seasonal mean surface flows.
Hugh Roarty   +14 more
wiley   +1 more source

Brahan Project High Frequency Radar Ocean Measurements: Currents, Winds, Waves and Their Interactions

open access: yesRemote Sensing, 2014
We describe radar measurements of waves, currents and winds made on the coast of northern Scotland during two 2013/14 winter storms, giving methods, results and interpretation.
Belinda Lipa   +5 more
doaj   +1 more source

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